23908139472 has 40 divisors (see below), whose sum is σ = 70585936576. Its totient is φ = 6830896896.

The previous prime is 23908139467. The next prime is 23908139491. The reversal of 23908139472 is 27493180932.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35577253 + ... + 35577924.

Almost surely, 2^23908139472 is an apocalyptic number.

It is an amenable number.

23908139472 is an abundant number, since it is smaller than the sum of its proper divisors (46677797104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23908139472 is a wasteful number, since it uses less digits than its factorization.

23908139472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71155195 (or 71155189 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 23908139472 in words is "twenty-three billion, nine hundred eight million, one hundred thirty-nine thousand, four hundred seventy-two".